Re: radeon-pre-2

[Jon Smirl <jonsmirl@gmail.com>]

On Sat, 11 Sep 2004 14:05:54 -0400 (EDT), Vladimir Dergachev
<volodya@mindspring.com> wrote:
> > All register writes would occur in the driver. There is nothing
> > stopping the code that computes those register values from running in
> > user space.
> >
> > A example mode setting IO would take:
> >  display buffer offset
> >  width, height, stride, etc - for fbcon to use
> >  register values to set the mode
> >
> > Mode setting needs to be serialized. It may be better to do the
> > serialization before the hotplug event, in that case the mode setting
> > IOCTL would be implicitly serialized and not need a separate lock.
> 
> Just to clear up things - do you plan to retain the knowledge of last mode
> set in the DRM driver ?

Yes, you have to do that for fbcon and suspend/restore to work.

-- 
Jon Smirl
jonsmirl@gmail.com